Vectair Systems V-Air Passive air freshener dispenser for V-Air Solid Evolution Freshener refills. No batteries or power source required, just natural airflow. Keyed lock prevents theft of refill. This white dispenser unit is ideal for discrete placement in bathrooms, boardrooms or any communal space that would benefit from a fresh scent. V-Air Solid particles are much smaller and lighter than the particles in other systems, so remain in the air for many hours. Delivers fragrance for up to 60 days. Single dispenser supplied.